Loose-leaf binder



Nov. 26, 1929. D s- MCCHESNEY LoQsE LEAF BINDER Filed May '7. 1928 nlnlllllntln:

"WWII M nNM/v. I IIIIIIIIIIIII n Patented Nov. 26, 1929 UNITED STATES PATENT OFFICE LOOSE-LEAF BINDER Application filed May 7, 1928.

My invention relates to a new and improved loose leaf binder of the type usually called post binder and has particular reference to a means for locking the posts in the housings.

In the use of loose leaf binders it is frequently desirable that when leaves have been placed in the binder they be locked therein so that leaves can be placed in the binder and removed therefrom only by the person who possesses the means for unlocking the posts so that they may be withdrawn from their housings.`

Under certain conditions of use it is necessary to lock only one of a plurality of binders and when this condition exists it is preferable to have a lock which can be usedinterchangeably with a number of similar binders.

The main object of my invention is to provide a locking means for post binders which will be positive in its action and which is capable of easy and rapid use.

Another object of my invention is to provide a device whereby a single locking means will lock both ends of the posts in their respective housings.

Another object is to provide a locking means for post binders which may be u sed interchangeably with a plurality of similar binders.

Other objects and advantages relate to the size, shape and arrangement of parts all as will more fully appear from the following description taken in connection with the accompanying drawings in which Figure l is a perspective view of a binder, partially broken away, with one cover open and showing my Vlocking means in position.

Figure 2 is a section on line 2-2 of Figure l.v

Figure 3 is a section on line 8 3 of Figure 2.

Figure 4 is a section on line 4 4 of Figure 1.

Figure 5 is a section on line 5-5 of Figure 1 showing a key', partially broken away, in position in the lock.

It will be understood that my locking means may be used with different types of post binders in which the ends of the posts are re- .back plate -3- and is connected to covers Serial No. 275,733.

leased from the housings by the withdrawal of pintle carrying rods or other securing means, but for the purpose of illustrating the construction of my device I have here shown a particulartype of post binder having opposed covers -land -2- hingedly c'onnected to a back plate i3- by means of a piano hinge. A protecting back -4- eX- tends longitudinally of the binder adjacent -land --2n by strips -5- and -6- of leather or other flexible material. At each edge of back plate -3- and inside of covers -1- and -2- I provide housings 7- an d -8-, tubular in form. Housings 7- and -8- are hingedly connected to back plate -3 on the same pintles -9- and -10- which carry covers -land -2-.

Housing -7- is provided with a plurality of openings ll-ll` in longitudinal spaced relation for the reception of the ends of the posts 23-23, and housing -8- is provided with a similar series of openings 13-13 in longitudinal spaced relation and in 4opposed relation to the openings ll-l'l in housing I also provide in housing -7- a slide -llhaving a plurality of pintles 12-12 positioned to register with holes -ll-llwhen the'slide is in position in housing -7-. Slide 141- is provided with a handle -15- at the open end -16- of housing -7- and is of a proper length to abut against the closed end -17- of housing -7- when the slide has been pushed within the housing -7-.

A similar slide -,l8- carrying pintles ISP-19 positioned to register with holes 12B-13 is positioned in the housing -8-. Slide -18- has a handle -20- at the end adjacent the open end -21- of housing 8 and is of a proper length to abut against the closed end -22- of housing` -8- when the slide -l8- is pushed within the housing -8-.

I provide a plurality of posts 23-23' of a size and shape permitting one end to enter holes l111 in the housing -7- and the other end to enter holes 13-13 in housing -8 Posts 973-23 are provided at each end with apertures 2,4-241 for the reception in one case 100 aus of pintles l2-,- and in the other case tles -19--. Y

It will be understood that, when one end of a post 23 is positioned in a. hole 11 in housing *3?* and slide 111- pushed inwardly into housing -7- so that a pintle -12- will enter the hole 2liin post -23-, the post will be locked in position. Similarly when the other end of post -23- is placed in housing -8- through hole -13 and slide -18 pushed inwardly so that pintle -19- will enter aperture 2A- in post -23-, the post will be locked in position in housing -8-.

As perhaps may best be seen from Figures 4 and V5 I provide on the rear of back plate .-.3- a keeper -25-- secured to back plate by rivets 26- or other convenient means.V Keeper -25- has a circular aperture *'27- for the reception of a lock hereinafter to be described. Aperture -27- extends inwardly from the end of back plate -3-toa point adjacent the inner end of keeper -25-. I provide in the inner end of keeper -25- a rectangular slot 28- extending through the'end of keeper 25- and communicating with the bottom of aperture -27-.

Adjacent the outer end of aperture -27- I provide a plurality, in this case shown as four, of longitudinally extending apertures 29- in which are positioned plungers -30 backed by springs -31- of a proper tension to normally force vplungers 3U- some distance into aperture --27-.V

My lock consists of a hollowl plunger -32- of a size to lit into aperture -27- and carrying a key receiving member -33- eXtending therethrough and having on its inner end a rectangular T-shaped lug *341- of a size andshape to project through slot --28- when in the proper position to register therewith'but which cannot be retracted through slot -28'- when in any other position in relation thereto.

Key receiving member -33 has an irregular aperture -35 adapted to receive a special shape of key -36-. A plurality ofholes -37---, in this case shown as four, extend through the side wall of plunger -32- and are positioned to register with apertures -29*- when the plunger 32- is-in aperture -27- and the device is in the locked position.' A plurality of plungers 38 of unequal lengths are positioned in holes -37-.

When plunger -32- is in position inaperture -27 with holes S7- in registration with apertures -29 the plungers 3U- will be forced inwardly by spring -31- so that they will be partially in apertures -29- and partially in holes -37-, and thus prevent the rotation of plunger B2- and the registration of lug 34- with slot -28-H to permit the'withdrawal of plunger of pinu32h from aperture -27-. The edge of key -36- is provided with recesses-39 of different depths, which recesses 39" will, when the key 36- is in position in the key receiving member -83-, register with the inner ends of plungers -38-- The depth of the recesses -39- with relation'to the length of the plungers -38- with which they are severally in registration is such that when the key -96- is in position in the key receiving member *B3-'the plungersI -88- will be forced outwardly to the outside end of apertures -37- carrying plungers 3G- before themV 'so that plunger -30 will no longer have any portions in plungert --32n and plunger --32- inayfthen be rotated in aperture -27 to place lug -84- in registration with slot -28- and permit the remogal of plunger -32- from aperture 2 A locking plate -l0- is afliXed tol the outer surface of plunger -32 by` rivets -41- or other convenient means. Locking plate 40- is of a size and shape, as perhaps may best be seen from Figure 1, to cover keeper -25- and extend upwardly to register over the open end of housing-7- and extends downwardly to register with the open end of housing 8%.

It will be understood that when the posts -23- are in position in housings 7 and 8 with slides 14 and 18' pushed inwardly into housings 7 and 8 respectively so that pintles 15 will be positioned in holes 2liof posts 23 and pintles 19 in holes 24 in the opposite ends of posts 23 and thelocking plate 4l() is in position it will then be impossible for the posts 23 to be released from their positions in housings 7 and 8 due to the fact that slides 1li and 18 cannot be withdrawn i from housings 7 and 8.

hen it is desired to release the posts 23 from either or both of housings --7- and k8h the key -36- is inserted in the key receiving' member 33- and the plunger -32- is rotated to bring lug -3lin registration with slot 428- so that plunger -32-, carrying locking platee-40, may be removed from aperture -27- and from the open ends of housings -7- and -8- thus permitting the withdrawal of either slide 14 or 18 and the release of posts 23.

It willbe understoodthat the material of which my device is constructed may be varied "ies What I claim is:

l. In a device of the class described, a back plate, a pair of opposed covers hinged to the back plate, a housing hinged to one edge of the back plate, a second housing hinged to the opposite edge of the back plate, a plurality of posts having their opposite ends in the housings, a slide having a plurality of pintles slidably mounted in each housing, a locking plate removably positioned over the ends of the housings to prevent the movement of the slides, and means for locking the locking plate in position.

2. In a device of the class described, a back plate, a housing hingedly connected to one longitudinal edge of the back plate, a second housing hingedly connected to the opposite longitudinal edge of the back plate, a pintle carrying slide slidably mounted in each housing, a removable locking plate positioned across the ends of the housings to prevent movement of the pintle carrying slides, and means for locking the locking plate in position.

3. In a device of the class described, a back plate, a housing hingedly connected to one longitudinal edge of the back plate, a second housing hingedly connected to the opposite longitudinal edge of the back plate, a pintle carrying slide slidably mounted in each housing, a removable locking plate positioned across the ends of the housing to prevent movement of the pintle carrying slide, and means including a keeper secured to the back plate for locking the locking plate in position.

4. In a device of the class described, a pair of opposed housings each having an open end and a closed end, a pintle-carryin-g slide slidably mounted in each housing, detachable means extending across the open ends of the iousings for securing the pintle carrying slides in the housings, and means for locking the last-named means in position.

5. In a device of the class described, opposed housings, each housing having an open end and a closed end, a pintle-carrying slide in each housing, and a detachable plate positioned over the open ends of the housings to prevent movement of the slides.

6. In a device of the class described, opposed housings, each housing having an open end and a closed end, a pintle-carrying slide in each housing, a detachable plate positioned over the open ends of the housings to prevent movement of the slides, and means forreleasably locking the plate in position.

DONALD S. MCCHESNEY. 

